﻿using Unity.Entities;

namespace Unity.Entities
{
    public class ComponentSystemBase {}
    public class SystemBase : ComponentSystemBase
    {
        protected virtual void OnUpdate() {}
    }
}

public partial class BigmapSystemBase : SystemBase
{
    protected override void OnUpdate()
    {
        DoThing();
    }

    private void DoThing()
    {
    }
}